I'm playing the scenario The Black Tower, and none of my units are able to heal. Makes for an extra challenge, but it's not very fun. The only way I can get them to heal is when they level up (and that's not really enough to make up for the damage some of my heroes take in trying to level up). I think when I started the map, units were healing, but it stopped somewhere along the line. Maybe the first time one of my units was poisoned? I'm not sure. Either way, it's very frustrating. Is there anyone who knows anything about this problem and how I might go about fixing it?